1、 IEC 61558-2-20Edition 2.0 2010-06INTERNATIONAL STANDARD NORME INTERNATIONALESafety of transformers, reactors, power supply units and combinations thereof Part 2-20: Particular requirements and tests for small reactors Scurit des transformateurs, bobines dinductance, blocs dalimentation et des combi
2、naisons de ces lments Partie 2-20: Rgles particulires et essais pour les petites bobines dinductance IEC61558-2-20:2010 GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURITTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified
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17、NAL STANDARD NORME INTERNATIONALESafety of transformers, reactors, power supply units and combinations thereof Part 2-20: Particular requirements and tests for small reactors Scurit des transformateurs, bobines dinductance, blocs dalimentation et des combinaisons de ces lments Partie 2-20: Rgles par
18、ticulires et essais pour les petites bobines dinductance INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE QICS 29.180 PRICE CODECODE PRIXISBN 978-2-88912-038-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Elec
19、trotechnique Internationale GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT 2 61558-2-20 IEC:2010 CONTENTS FOREWORD.3 1 Scope.5 2 Normative references6 3 Terms and definitions .6 4 General requirements .8 5 General notes on tests8 6 Ratings.8 7 Classification 9 8 Marking and other information.
20、9 9 Protection against electric shock.11 10 Change of input voltage setting .11 11 Output voltage and output current under load 11 12 No-load output voltage12 13 Short-circuit voltage12 14 Heating.12 15 Short-circuit and overload protection .12 16 Mechanical strength14 17 Protection against harmful
21、ingress of dust, solid objects and moisture.14 18 Insulation resistance, dielectric strength and leakage current 14 19 Construction .14 20 Components .14 21 Internal wiring.15 22 Supply connection and other external flexible cables or cords15 23 Terminals for external conductors .15 24 Provision for
22、 protective earthing15 25 Screws and connections .15 26 Creepage distances, clearances and distances through insulation .15 27 Resistance to heat, fire and tracking .15 28 Resistance to rusting 16 Annexes17 Bibliography17 61558-2-20 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY OF TR
23、ANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINATIONS THEREOF Part 2-20: Particular requirements and tests for small reactors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC N
24、ational Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Pu
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34、 International standard IEC 61558-2-20 has been prepared by IEC technical committee 96: Transformers, reactors, power supply units and combinations thereof. This second edition cancels and replaces the first edition published in 2000. It constitutes a technical revision. The main changes consist of
35、 updating this part in accordance with IEC 61558-1:2005. This part has the status of a group safety publication in accordance with IEC Guide 104:1997, The preparation of safety publications and the use of basic safety publications and group safety publications. 4 61558-2-20 IEC:2010 The text of this
36、 standard is based on the following documents: FDIS Report on voting 96/356/FDIS 96/363/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives,
37、 Part 2. This part is intended to be used in conjunction with the latest edition of IEC 61558-1 and its amendments. It is based on the second edition (2005) of that standard. This part supplements or modifies the corresponding clauses in IEC 61558-1, so as to convert that publication into the IEC st
38、andard: Particular requirements and tests for small reactors. A list of all parts of the IEC 61558 series, under the general title: Safety of transformers, reactors, power supply units and combinations thereof, can be found on the IEC website. Future standards in this series will carry the new gener
39、al title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. Where a particular subclause of Part 1 is not mentioned in this part, that subclause applies as far as is reasonable. Where this part states “addition“, “modification“ or “replacemen
40、t“, the relevant text of Part 1 is to be adapted accordingly. In this part, the following print types are used: requirements proper: in roman type; test specifications: in italic type; explanatory matter: in smaller roman type: In the text of this part, the words in bold are defined in Clause 3. Sub
41、clauses, notes, figures and tables additional to those in Part 1 are numbered starting from 101; supplementary annexes are entitled AA, BB, etc. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/w
42、ebstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a t
43、ransitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopt
44、ed for implementation nationally not earlier than 12 months from the date of publication. 61558-2-20 IEC:2010 5 SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS AND COMBINATIONS THEREOF Part 2-20: Particular requirements and tests for small reactors 1 Scope Replacement: This part of IEC 61558 de
45、als with the safety of small reactors for general applications. NOTE 1 Safety includes electrical, thermal and mechanical aspects. Unless otherwise specified, from here onward, the term transformer or reactor covers small reactors. This part is applicable to stationary or portable, single-phase or p
46、olyphase, air-cooled (natural or forced) general purpose reactors including alternating current, premagnetised and current compensated independent or associated reactors. The rated supply voltage does not exceed 1 000 V a.c. or 1 500V ripple-free d.c., the rated supply frequency and the internal ope
47、rational frequencies do not exceed 1 MHz. The rated power does not exceed: 25 kVAR a.c. (25 kW d.c.) for single-phase reactors, 50 kVAR a.c. (50 kW d.c.) for poly-phase reactors. This part is applicable to reactors without limitations of the rated power subject to an agreement between the purchaser
48、and the manufacturer. This part is applicable to dry-type reactors. The windings may be encapsulated or non-encapsulated. This part does not apply to: reactors covered by IEC 60289; ballast for tubular fluorescent covered by IEC 61347-2-8; ballast for discharge lamps (excluding tubular fluorescent l
49、amps) covered by IEC 61347-2-9. NOTE 2 For reactors filled with liquid dielectric or pulverised material such as sand, additional requirements are under consideration. NOTE 3 Attention is drawn to the following: - for reactors intended to be used in vehicles, on board ships, and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary; - measures to prote
